﻿using ShSoft.Common.PoweredByLee;
using SlamDunk.CMS.Model.DataModel;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Text;

namespace SlamDunk.CMS.DAL
{
    public class ChannelDal
    {
        #region # 静态构造器

        /// <summary>
        /// SqlHelper
        /// </summary>
        private static readonly SqlHelper _SqlHelper;

        /// <summary>
        /// 静态构造器
        /// </summary>
        static ChannelDal()
        {
            _SqlHelper = new SqlHelper(ConfigurationManager.ConnectionStrings["CMS"].ConnectionString);
        }

        #endregion

        #region 01.根据父Id获取栏目列表
        /// <summary>
        /// 根据父Id获取栏目列表
        /// </summary>
        /// <param name="pId">父Id</param>
        /// <returns>栏目列表</returns>
        public List<Channel> GetModelList(int pId)
        {
            List<Channel> list = new List<Channel>();
            string sql = "SELECT * FROM Channels WHERE DelFlag = 0 AND PId = @PId";
            using (SqlDataReader reader = _SqlHelper.ExecuteReader(sql, new SqlParameter("@PId", pId)))
            {
                while (reader.Read())
                {
                    list.Add(this.ToModel(reader));
                }
            }
            return list;
        }
        #endregion

        #region 01.添加方法
        /// <summary>
        /// 添加一个实体对象
        /// </summary>
        /// <param name="channel">要添加的实体对象</param>
        /// <returns>添加完毕后的实体对象</returns>
        public Channel Add(Channel channel)
        {
            string sql = "INSERT INTO Channels (PId, ChannelName, Abbr, Description, SaveDirectory, IndexTemplate, ListTemplate, DetailTemplate, PageSize, Sort, IsLink, IsNavigator, DelFlag, AddTime)  output inserted.Id VALUES (@PId, @ChannelName, @Abbr, @Description, @SaveDirectory, @IndexTemplate, @ListTemplate, @DetailTemplate, @PageSize, @Sort, @IsLink, @IsNavigator, @DelFlag, @AddTime)";
            SqlParameter[] args = new SqlParameter[] {
                new SqlParameter("@PId", ToDBValue(channel.PId)),
                new SqlParameter("@ChannelName", ToDBValue(channel.ChannelName)),
                new SqlParameter("@Abbr", ToDBValue(channel.Abbr)),
                new SqlParameter("@Description", ToDBValue(channel.Description)),
                new SqlParameter("@SaveDirectory", ToDBValue(channel.SaveDirectory)),
                new SqlParameter("@IndexTemplate", ToDBValue(channel.IndexTemplate)),
                new SqlParameter("@ListTemplate", ToDBValue(channel.ListTemplate)),
                new SqlParameter("@DetailTemplate", ToDBValue(channel.DetailTemplate)),
                new SqlParameter("@PageSize", ToDBValue(channel.PageSize)),
                new SqlParameter("@Sort", ToDBValue(channel.Sort)),
                new SqlParameter("@IsLink", ToDBValue(channel.IsLink)),
                new SqlParameter("@IsNavigator", ToDBValue(channel.IsNavigator)),
                new SqlParameter("@DelFlag", ToDBValue(channel.DelFlag)),
                new SqlParameter("@AddTime", ToDBValue(channel.AddTime)),
            };
            //根据newId返回新添加的实体对象
            int newId = (int)_SqlHelper.ExecuteScalar(sql, args);
            return this.GetModel(newId);
        }
        #endregion

        #region 02.删除方法（物理删除）
        /// <summary>
        /// 删除一个实体对象
        /// </summary>
        /// <param name="id">要删除的实体对象Id</param>
        /// <returns>受影响的行数</returns>
        public int PhysicalDelete(int id)
        {
            string sql = "DELETE FROM Channels WHERE Id = @Id";
            SqlParameter arg = new SqlParameter("@Id", id);
            return _SqlHelper.ExecuteNonQuery(sql, arg);
        }
        #endregion

        #region 04.修改方法
        /// <summary>
        /// 修改一个实体对象
        /// </summary>
        /// <param name="channel">构造好的要修改的实体对象</param>
        /// <returns>受影响的行数</returns>
        public int Update(Channel channel)
        {
            StringBuilder sql = new StringBuilder();
            sql.Append("UPDATE Channels SET PId = @PId");
            sql.Append(", ChannelName = @ChannelName");
            sql.Append(", Abbr = @Abbr");
            sql.Append(", Description = @Description");
            sql.Append(", SaveDirectory = @SaveDirectory");
            sql.Append(", IndexTemplate = @IndexTemplate");
            sql.Append(", ListTemplate = @ListTemplate");
            sql.Append(", DetailTemplate = @DetailTemplate");
            sql.Append(", PageSize = @PageSize");
            sql.Append(", Sort = @Sort");
            sql.Append(", IsLink = @IsLink");
            sql.Append(", IsNavigator = @IsNavigator");
            sql.Append(", DelFlag = @DelFlag");
            sql.Append(", AddTime = @AddTime");
            sql.Append(" WHERE Id = @Id");
            SqlParameter[] args = new SqlParameter[] {
                new SqlParameter("@Id", channel.Id)
                ,new SqlParameter("@PId", ToDBValue(channel.PId))
                ,new SqlParameter("@ChannelName", ToDBValue(channel.ChannelName))
                ,new SqlParameter("@Abbr", ToDBValue(channel.Abbr))
                ,new SqlParameter("@Description", ToDBValue(channel.Description))
                ,new SqlParameter("@SaveDirectory", ToDBValue(channel.SaveDirectory))
                ,new SqlParameter("@IndexTemplate", ToDBValue(channel.IndexTemplate))
                ,new SqlParameter("@ListTemplate", ToDBValue(channel.ListTemplate))
                ,new SqlParameter("@DetailTemplate", ToDBValue(channel.DetailTemplate))
                ,new SqlParameter("@PageSize", ToDBValue(channel.PageSize))
                ,new SqlParameter("@Sort", ToDBValue(channel.Sort))
                ,new SqlParameter("@IsLink", ToDBValue(channel.IsLink))
                ,new SqlParameter("@IsNavigator", ToDBValue(channel.IsNavigator))
                ,new SqlParameter("@DelFlag", ToDBValue(channel.DelFlag))
                ,new SqlParameter("@AddTime", ToDBValue(channel.AddTime))
            };
            return _SqlHelper.ExecuteNonQuery(sql.ToString(), args);
        }
        #endregion

        #region 05.根据主键获取单个实体对象
        /// <summary>
        /// 根据主键获取单个实体对象
        /// </summary>
        /// <param name="id">主键</param>
        /// <returns>单个实体对象</returns>
        public Channel GetModel(int id)
        {
            string sql = "SELECT * FROM Channels WHERE Id = @Id";
            using (SqlDataReader reader = _SqlHelper.ExecuteReader(sql, new SqlParameter("@Id", id)))
            {
                if (reader.Read())
                {
                    return ToModel(reader);
                }
                else
                {
                    return null;
                }
            }
        }
        #endregion

        #region 06.获取实体对象集合
        /// <summary>
        /// 获取实体对象集合
        /// </summary>
        /// <returns>实体对象集合</returns>
        public List<Channel> GetModelList()
        {
            List<Channel> list = new List<Channel>();
            string sql = "SELECT * FROM Channels WHERE DelFlag = 0";
            using (SqlDataReader reader = _SqlHelper.ExecuteReader(sql))
            {
                while (reader.Read())
                {
                    list.Add(ToModel(reader));
                }
            }
            return list;
        }
        #endregion

        #region 07.获取总记录条数
        /// <summary>
        /// 返回总记录条数
        /// </summary>
        /// <returns>总记录条数</returns>
        public int GetCount()
        {
            string sql = "SELECT COUNT(*) FROM Channels WHERE DelFlag = 0";
            return (int)_SqlHelper.ExecuteScalar(sql);
        }
        #endregion

        #region 09.根据条件获取记录条数（1个参数）
        /// <summary>
        /// 根据条件获取记录条数（1个参数）
        /// </summary>
        /// <param name="field">字段名称</param>
        /// <param name="arg">条件参数</param>
        /// <returns>记录条数</returns>
        public int GetCount(string field, string arg)
        {
            string sql = string.Format("SELECT COUNT(*) FROM Channels WHERE DelFlag = 0 AND {0} LIKE '%{1}%'", field, arg.FilterSql());
            return (int)_SqlHelper.ExecuteScalar(sql);
        }
        #endregion

        #region 10.根据条件获取记录条数（2个参数）
        /// <summary>
        /// 根据条件获取记录条数（2个参数）
        /// </summary>
        /// <param name="field1">字段名称</param>
        /// <param name="field2">字段名称</param>
        /// <param name="arg1">条件参数</param>
        /// <param name="arg2">条件参数</param>
        /// <returns>记录条数</returns>
        public int GetCount(string field1, string arg1, string filed2, string arg2)
        {
            string sql = string.Format("SELECT COUNT(*) FROM Channels WHERE DelFlag = 0 AND {0} LIKE '%{1}%' AND {2} LIKE '%{3}%'", field1, arg1.FilterSql(), filed2, arg2.FilterSql());
            return (int)_SqlHelper.ExecuteScalar(sql);
        }
        #endregion

        #region 11.根据条件获取记录条数（3个参数）
        /// <summary>
        /// 根据条件获取记录条数（3个参数）
        /// </summary>
        /// <param name="field1">字段名称</param>
        /// <param name="field2">字段名称</param>
        /// <param name="field3">字段名称</param>
        /// <param name="arg1">条件参数</param>
        /// <param name="arg2">条件参数</param>
        /// <param name="arg3">条件参数</param>
        /// <returns>记录条数</returns>
        public int GetCount(string field1, string arg1, string field2, string arg2, string field3, string arg3)
        {
            string sql = string.Format("SELECT COUNT(*) FROM Channels WHERE DelFlag = 0 AND {0} LIKE '%{1}%' AND {2} LIKE '%{3}%' AND {4} LIKE '%{5}%'", field1, arg1.FilterSql(), field2, arg2.FilterSql(), field3, arg3.FilterSql());
            return (int)_SqlHelper.ExecuteScalar(sql);
        }
        #endregion

        #region 12.根据条件获取记录条数（4个参数）
        /// <summary>
        /// 根据条件获取记录条数（4个参数）
        /// </summary>
        /// <param name="field1">字段名称</param>
        /// <param name="field2">字段名称</param>
        /// <param name="field3">字段名称</param>
        /// <param name="field4">字段名称</param>
        /// <param name="arg1">条件参数</param>
        /// <param name="arg2">条件参数</param>
        /// <param name="arg3">条件参数</param>
        /// <param name="arg4">条件参数</param>
        /// <returns>记录条数</returns>
        public int GetCount(string field1, string arg1, string field2, string arg2, string field3, string arg3, string field4, string arg4)
        {
            string sql = string.Format("SELECT COUNT(*) FROM Channels WHERE DelFlag = 0 AND {0} LIKE '%{1}%' AND {2} LIKE '%{3}%' AND {4} LIKE '%{5}%' AND {6} LIKE '%{7}%'", field1, arg1.FilterSql(), field2, arg2.FilterSql(), field3, arg3.FilterSql(), field4, arg4.FilterSql());
            return (int)_SqlHelper.ExecuteScalar(sql);
        }
        #endregion

        #region 17.根据IDataReader对象返回实体对象方法
        /// <summary>
        /// 根据IDataReader对象返回实体对象方法
        /// </summary>
        /// <param name="reader">IDataReader对象</param>
        /// <returns>实体对象</returns>
        public Channel ToModel(IDataReader reader)
        {
            Channel channel = new Channel();
            channel.Id = (int)ToModelValue(reader as SqlDataReader, "Id");
            channel.PId = (int)ToModelValue(reader as SqlDataReader, "PId");
            channel.ChannelName = (string)ToModelValue(reader as SqlDataReader, "ChannelName");
            channel.Abbr = (string)ToModelValue(reader as SqlDataReader, "Abbr");
            channel.Description = (string)ToModelValue(reader as SqlDataReader, "Description");
            channel.SaveDirectory = (string)ToModelValue(reader as SqlDataReader, "SaveDirectory");
            channel.IndexTemplate = (string)ToModelValue(reader as SqlDataReader, "IndexTemplate");
            channel.ListTemplate = (string)ToModelValue(reader as SqlDataReader, "ListTemplate");
            channel.DetailTemplate = (string)ToModelValue(reader as SqlDataReader, "DetailTemplate");
            channel.PageSize = (int)ToModelValue(reader as SqlDataReader, "PageSize");
            channel.Sort = (int?)ToModelValue(reader as SqlDataReader, "Sort");
            channel.IsLink = (bool)ToModelValue(reader as SqlDataReader, "IsLink");
            channel.IsNavigator = (bool)ToModelValue(reader as SqlDataReader, "IsNavigator");
            channel.DelFlag = (bool)ToModelValue(reader as SqlDataReader, "DelFlag");
            channel.AddTime = (DateTime)ToModelValue(reader as SqlDataReader, "AddTime");
            return channel;
        }
        #endregion

        #region 18.C#值转数据库值空值处理
        /// <summary>
        /// C#值转数据库值空值处理
        /// </summary>
        /// <param name="value">C#值</param>
        /// <returns>处理后的数据库值</returns>
        public object ToDBValue(object value)
        {
            if (value == null)
            {
                return DBNull.Value;
            }
            else
            {
                return value;
            }
        }
        #endregion

        #region 19.数据库值转C#值空值处理
        /// <summary>
        /// 数据库值转C#值空值处理
        /// </summary>
        /// <param name="reader">IDataReader对象</param>
        /// <param name="columnName">列名</param>
        /// <returns>C#值</returns>
        public object ToModelValue(IDataReader reader, string columnName)
        {
            if (reader.IsDBNull(reader.GetOrdinal(columnName)))
            {
                return null;
            }
            else
            {
                return reader[columnName];
            }
        }
        #endregion
    }
}
